A device that produces electricity by transforming chemical eneqk q j ;06g0vyqi0kwkc0es(.nrgy into electrical energyk0 sqj. nkykwqv(c6e;0q i0g0 is called a

  A car battery

  The total amount of charge that passes through a wire's full cross s)jpljzrcv5, 1j6 d+g) hua-te ection at any point per unit of time is referred5 tr+jvj 6l-g ce)uha, )dpjz1 to as

  The direction of convention curren5hv/ u1n cwdi-yrf a6k+(gm8y lsvr 6y,)k)pxt is taken to be the direction that

  A coulomb per secondavo h. x(lxk4. is the same as

  Car batteries are rated in "amp-hours." T, k* qoh.. f7*v0xm8zy4okprdciqx (t his is a measure of their

  The resistance of a wire is defi.tbzc uzmzfp.1 weci2/ 2v 05fned as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wi , iv/ solj-s2ga t:bhgx+/n,fre is

  The resistivity of a wire denzpm.:cggqa* 0 *5ayv pends on

  Which conducting material has the lowest resistivity value?c wp9gt48i1 ii

  Consider two copper wires. One has twice the length of the oth92 fmr, )vynvper. How do the resistivitifpn2,m)v9rv y es of these two wires compare?

  Consider two copper wires. One has twice the length of azpzpp;) j:/kz)f , ecalfp:5the other. How do the resistances of thk)):pfpj/al :5;p ,eaf pzzczese two wires compare?

  Consider two copper wires. One has twpgj1bbs5p p+. ice the cross-sectional area of the other. Hos+ 1pj. p5pbbgw do the resistances of these two wires compare?

  Consider two copper wires. One has twice the lengt*loold u 19c2fh and twice the cross-sectional area of the other. How do the resista92lf*dc 1lo ounces of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By wp l ( wrn4;xa)hcym8m;hat factor does the resistance changw)m(mhna rc ;;yp48 lxe?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0kq 9jne2o jd// cm diameter rod of the same length and made o2eqon d/ 9k/jjf the same material?

  The resistivity of most com ur 8vlgd /xirpirb.-9h.+e (kmon metals

  Negative temperature coefficients of resis *h7iy+ z-ckkp zohp3kj;c: q,tivity

  What is 1 W equivalent tohy fj ep /ts ,6t*0:lxtpco1,n?

  A kilowatt-hour is equivalent tzact3mm9 4g x7o

  If the resistance in a constant voltage circuit is doubled,encqsd3c 8 ua8hy*v2-( .stil the power dissipated by that circuy 2*8 clnvsds8a(-e3t. qchiuit will

  If the voltage across a circuit of constant resistance +jnzl/9wop y;is doubled, the power dissipated byoj/z +nlwyp;9 that circuit will

  If the resistance in a circc 2 3d 23z-.p9t27gjm:otxgg3 3o uteoqvorjguit with constant current flowing is doubled, the power dissipated by that circ3:u2edj23.z jgog g- 7gttmo923qt p oco3rxvuit will

  If the current flowing throughowv5 t0malqwi c d+sqz3:va * ;f;,a6w a circuit of constant resistance is doubled, the power dissipated by that i,zaq+aw:6ov sf0awqd*cm3 v;lw 5t ;circuit will

  During a power demand, the voltage f wjt3 us)dxe2fac5:3 output is reduced by 5.0%. By what percentage is th tdj5e:sa3f2) cf3uw xe power on a resistor affected?

  A current that is sinusoidal with respect to time is referredkx ihaozk+ 58- to as

  Consider two copper wires each carrying 1axoxylc 4pw;:(+fskh - vr,koje 2l)a(lx-x a current of 3.0 A. One wire has twice the diameter of thes-yl:2(apv eko -x( 4xxhwxralk+)cjl1f, ; o other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the rv*fzrd * uvf(2esistivity becomes essentially zero at very low temperatureurdfz2 v*f*v(s are referred to as

  What current is flowing if 0.67e gj9g47*bo ) oyeli0c C of charge pass a point in 0.30 s?

  A charge of 12 C pas/e w,xxwk*7 ev0k* boyses through an electroplating apparatus in 2.0 min. What is the average cu0o *k*e7vx exy,bk /wwrrent?

  How much charge must pass by a point in 10 s for the 81:de1 embau yv(v7kl+s xi(v current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowin n3z60 bo8o* e,a 6uncj3zp1i vb:yqnug if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, haai dv:vq,ih7 3s been left on for 10 min. What is the net number of electrons that have passed through the iviq,a:h d3v 7coffee maker?

  In an electroplating process, it is desired to deposlm3z/b- 3psvz it 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions p- /vzmz3bl3sare singly charged, and the atomic weight of silver is 108.)

  What potential difference is 4dlxh/pl+rjk* j/ zt61w u-4np0 f wkjrequired to cause 4.00 A to flow through a resistance of 330 W?4p4u jf w6j1*jd - ln0ktz/hrw p+l/xk

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 A) vim0;vnfd jo8ij57l d 0zl(z?

  A 4000-W resistor is connected across 220 V. What curr-w sm .y2kwdmu wlzv-18u*t;nw3w 5 rient will flow?

  A light bulb operating at 110 V2qymg:lj ph) 8 draws 1.40 A of current. What is its resistance?:mq2 j) 8ygplh

  A 12-V battery is connectep9 dr:jk gxrz.-+qdq)d to a 100-W resistor. How many electrons flow through the wire ingq r z)+:jrkdxd-p.q 9
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resistiw j5)gme6n(f yvmywng5e j f6()ity of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if thwx)v (ocu9 ev3m/hul8t k/ s+xe resistivit/(l ksw8+u3tum9 /)evxhc vxoy is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire ( pk+h1 ahgbip.y9 kp8:resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (9l .zi9w4nmzf v-mo;j 7 :m: rtdsh4uoresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040 ohms. What is its resistqk7. sb j,61i/imumh1u uups/ ivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius h,tv. tq+mk: zis 0.321 mm) nichrome wire if i,qmkzth+vt.: t is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangu* ej () 6qswtz-dqe2dzlar cross-section, 1.0 cm x 2.0 cm. What is the voz(dzed*t -s2)j wqq6 eltage drop along its length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a ra1c (reda;p u*fdius of 0.50 mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire w+s .7wnkeeql p9y-2u (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a rerrh)ym7v.t 6zem/m0fc;o* qxsistance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coeff, 2e2 pephnz0cicient of resistivity of platinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the melting point ofp(d mxz8bx /0 hat*kw6 indium. The resistance of the platinump8xwdma zt0 6*k/hbx( wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing throug (cui:.rldxd wdd+-br2 2 xd,oh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. s4 t5p4ixgyc. mx69bv What current will it draw?

  A 150-W light bulb runni usgg *x3. po 9j(l-l*l8l jpkp0bps)ing on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designe-4oh :fspep w)bq;od; d to be used in a 120-d;oh4pfqspow : );-beV circuit?

  A toaster is rated 800 W at 120 V. z0cc0pww)vl(,) l4ejr zrd3fWhat is the resistance of its heating elementlc( v3)zlew,dzp)f rrc 0j0w4?

  A 200-W resistor is ratedak5 6hfxfr n0, at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra:gtj6rog51t al ; m0tt:0opxa ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 12j 5* ,6+i c 8fufc:)fxhw sm1z,pvbstb0 V, what current does it draw?

  A lamp uses a 150-W bulb. If it xs*i +v8kik 8x;lmm9 jis used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistdzveq7x949yfpum z *j,f1/bn ance?

  How much does it cost to operate a 25-W soldering iron for / k9pet.dmrund0 5 wtvo99w2dxui2l6 8.0 hours, if energy cosu.dm2 x62idrw5uln w0t9/ vd9 e 9tpkots $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.( hb:8 i,:oq,uxap1x khp;nhc0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat skfj2s 9z/(n i *hf5e+kvc ahpx.;jc;energy is p ka/h2ej.v* pkhi5(n;;j+fs fs z9cxc roduced?

  A battery is rated at 12 V and 160 A-h. How much energfe ;r-*kuz)npe xe671iuly8s y does the battery store?-p i s)n8z1ufeuxe7 kl; yre6*

  How much energy does a 25-W soldering iron usejn6b-ht ; m xp4 p1wzq,8tkxn+ in 8.0 hours?

  A 100-W driveway light bulb is on 10 hor8 ;6 znqxi,gj3(j4)imchvfsurs per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimatr38j;6,hisqm (gi c f )njzx4ve the annual cost to operate the bulb.

  A 400-W computer (compute /6; dlsi:hyiwr plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the compyi; shdli :/6wuter annually?

  The monthly (30 days) electricgt1gve*rkgpfbj; o /3 pg3x85 bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricitgkf 1x/5 ;r eg3v btgj*p3po8gy costs 8.0 cents per kWh?

  The heating element in an electric 3asvv6y ,)vnc drier operates on 240 V and generates heat at the rate of c vsa)yvv3 n,62.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows through mpf14w-;r2 ns+ yr p8xfd7gkq$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costmavz bj:yl7 8 -nk70qls $1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has olj8o6wc,0aiim 3( kp60% efficiency. How much current does it draw from,olw(03omckj 6i ipa 8 a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source.6fdp*e /v.r,n ( k8eea. ynkod What rms current flows through this / p veadeoey.nr*fk6k(n8.d, device?

  A 500-W device is connected to a 120-Vjevfxp8b+-icdao b l) p/ ;7o; ac power source. What peak current flows through this de7o/vlf;i a - b;j pxo8+pbced)vice?

  A 500-W device is connected to a 120-V ac power sbl3: pzibf/n v8ak )h.ource. What is the peak voltage across this de:ikb3a bpzfhl.) vn/ 8vice?

  The diameter of a couxw p4ctk2 zj2* 96erypper wire is 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron caz46 pyjk22*crue9wtx rriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)